PURPOSE: To show color "interference" effects.

DESCRIPTION: Pattern transparencies of different color and physical character can be combined in various ways to obtain a variety of exotic effects. Several patterns obtained using various sets of colored transparencies are shown below. The moire patterns between one transparency and the lines of the video are as interesting as the lines created by the superposition of the two colored transparencies!

SUGGESTIONS:

REFERENCES: (PIRA 3B50.40) See Demonstration Reference File for descriptive literature from the source.

EQUIPMENT: Colored Moire patterns, overhead projector.

SETUP TIME: None.